What are the advantages of slot-die coating in lithium-ion secondary battery electrodes?

In manufacturing lithium-ion secondary battery electrodes, slot-die coating is one of the prevailing processes . Advantages of this pre-metered method in comparison to comma or roll coating are e.g. the precise dosing, easy scalable process parameters and its closed feed system , .

Are anode slurries slot-die coated for lithium-ion secondary batteries?

4. Conclusion and outlook Anode slurries for lithium-ion secondary batteries were slot-die coated at velocities of up to 60 m/min. Experimentally determined stability windows for two slurries and three gap widths were determined and different coating defects were observed. The results were compared to different common viscocapillary models.

Why is slot coating used in the manufacturing of lithium-ion-battery electrodes?

Therefore, slot coating is widely used in the manufacturing of lithium-ion-battery electrodes owing to its advantages such as pre-metered coating and high coating speed. Higher electrode-slot coating speeds are required to meet the ever-growing requirements of lithium-ion batteries and electric vehicle production (Kwade et al., 2018).

How are lithium-ion batteries made?

Provided by the Springer Nature SharedIt content-sharing initiative An important step in the production of lithium-ion batteries is the coating of electrodes onto conducting foils. The most frequently used coating method in

Why is defect-free slot coating important for lithium-ion-battery electrodes?

Defect-free slot coating is important in the design and manufacturing of lithium-ion-battery electrodes. However, the defect formation in electrode-slot coating is not clearly understood because of the involvement and coupling of many parameters.

Does high-speed slot coating cause defects in lithium-ion-battery electrodes?

However, striped, spotted, and irregular defects are encountered during high-speed slot coating (Schmitt et al., 2013, Didari et al., 2014). The existence of defects leads to a sharp deterioration of the electrochemical properties of lithium-ion-battery electrodes (Mohanty et al., 2016).